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  See more parts for Honda Civic Type-R
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ACL High Performance Rod Bearing Set 0.25mm for Honda F20C/F22C/H22A4 97-01 - 4B1912H-.25
ACL High Performance Rod Bearing Set 0.25mm for Honda F20C/F22C/H22A4 97-01 - 4B1912H-.25 - Image 2 ACL High Performance Rod Bearing Set 0.25mm for Honda F20C/F22C/H22A4 97-01 - 4B1912H-.25 - Image 2

ACL 4B1912H-.25 High Performance Rod Bearing Set

The ACL 4B1912H-.25 is a high-performance rod bearing set designed specifically for those seeking to enhance their engine's performance. With a focus on durability and efficiency, these bearings are crafted to meet the demands of high RPM conditions, making them a reliable choice for both street and track applications.

Features

  • High strength overlay plate with reduced thickness, allowing for improved fatigue properties.
  • Hardened steel backs on all rod bearings enhance support for the bearing lining, ensuring a secure fit in the housing.
  • Increased crush for better bearing retention, providing peace of mind during high-stress situations.
  • Flash plating elimination on the back of the bearings improves heat transfer, maximizing grip between the bearings and housing.
  • Designed with increased eccentricity to counteract bore distortion at high RPM, assisting in the formation of hydrodynamic oil films.
  • 3/4 grooved main bearings optimize load-carrying surface area and oil flow to the conrod bearings.
  • Tight, consistent wall tolerances help maintain precise clearances for optimal performance.
  • Enlarged ID chamfers on bearing edges accommodate larger fillet radii on performance crankshafts.

Specifications

  • Size: 0.25mm Oversized
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal Hardened Steel Backs
  • Min Std Shaft Size: 1.889 in / 47.98 mm
  • Max Std Shaft Size: 1.8898 in / 48 mm
  • Min Std Tunnel Size: 2.008 in / 51.004 mm
  • Max Std Tunnel Size: 2.0088 in / 51.024 mm
  • Max Wall at Crown: 0.0589 in / 1.496 mm
  • Max Overall Length: 0.7638 in / 19.40 mm

Customer Feedback

Many users have reported a noticeable improvement in engine response and reliability after switching to the ACL 4B1912H-.25 bearings. One customer mentioned, "I’ve been using these bearings in my Honda build, and they’ve held up great even during track days. The fit was perfect, and I feel more confident pushing my engine." Another noted, "These bearings seem to run cooler than the stock ones. I appreciate the engineering that went into them."

While the 4B1912H-.25 is tailored for high-performance applications, it's important to confirm that these bearings meet your specific engine needs. Always consult with a professional if you have any doubts regarding fitment or installation.

Other Part Numbers:
ACL #acl4B1912H-.25

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1997-2009, 2011, 2015-2017
 Honda Civic Type-R

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Who is ACL?

ACL is a company that specializes in manufacturing and distributing high-quality engine bearings that have played a key role in the Australian automotive parts market. 

Based in Launceston, Tasmania, Australia, the company has been in the business for more than 70 years and has become the leading brand when it comes to its market segment.

Throughout the years, ACL has consistently provided top quality products and has become the equipment supplier of multiple Automotive brands such as Lancia, Mazda, Mini, Mitsubishi, Nissan, Peugeot, Subaru, Toyota, Volvo, Suzuki, Renault, SAAB, and more.  ACL also provides a replacement product range used by the aftermarket industry.

The company ensures that it maintains its high level of standard by employing manufacturing processes that are ISO certified. They also use the industry’s most advanced tooling equipment and designing software that allows them to create products that are superior in quality. ACL has been known worldwide to create bearings that are durable, innovative, and precise.

ACL also offers bearing used for high-performance applications. The company has been involved in motorsport racing since the 1960s and has manufactured bearings used in Brabham Formula 1. Today, their products are being used in different racing disciplines such as the Australian Supercar Championship, Drag racing, Driftings, and Rally.

Purchase ACL Bearings at Vivid Racing

Engine Bearings are a critical component of a vehicle and should not be overlooked. If you want to make sure that what you get is something you could rely on, then ACL is the brand for you. With over 200 engine applications, whether it’s an American, Australian, European, or Asian made vehicle, ACL got you covered. Visit Vivid Racing and check out their list of bearings that would fit your specific needs.

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